3ZGY

Apo-structure of R-selective imine reductase from Streptomyces kanamyceticus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.71 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.185 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure and Activity of Nadph-Dependent Reductase Q1Eqe0 from Streptomyces Kanamyceticus, which Catalyses the R-Selective Reduction of an Imine Substrate.

Rodriguez Mata, M.Frank, A.Wells, E.Leipold, F.Turner, N.J.Hart, S.Turknburg, J.P.Grogan, G.

(2013) Chembiochem 14: 1372

  • DOI: 10.1002/cbic.201300321
  • Primary Citation of Related Structures:  3ZHB

  • PubMed Abstract: 
  • NADPH-dependent oxidoreductase Q1EQE0 from Streptomyces kanamyceticus catalyzes the asymmetric reduction of the prochiral monocyclic imine 2-methyl-1-pyrroline to the chiral amine (R)-2-methylpyrrolidine with >99% ee, and is thus of interest as a pot ...

    NADPH-dependent oxidoreductase Q1EQE0 from Streptomyces kanamyceticus catalyzes the asymmetric reduction of the prochiral monocyclic imine 2-methyl-1-pyrroline to the chiral amine (R)-2-methylpyrrolidine with >99% ee, and is thus of interest as a potential biocatalyst for the production of optically active amines. The structures of Q1EQE0 in native form, and in complex with the nicotinamide cofactor NADPH have been solved and refined to a resolution of 2.7 Å. Q1EQE0 functions as a dimer in which the monomer consists of an N-terminal Rossman-fold motif attached to a helical C-terminal domain through a helix of 28 amino acids. The dimer is formed through reciprocal domain sharing in which the C-terminal domains are swapped, with a substrate-binding cleft formed between the N-terminal subunit of monomer A and the C-terminal subunit of monomer B. The structure is related to those of known β-hydroxyacid dehydrogenases, except that the essential lysine, which serves as an acid/base in the (de)protonation of the nascent alcohol in those enzymes, is replaced by an aspartate residue, Asp187 in Q1EQE0. Mutation of Asp187 to either asparagine or alanine resulted in an inactive enzyme.


    Organizational Affiliation

    York Structural Biology Laboratory, Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
R-IMINE REDUCTASE
A, B, C, D
309Streptomyces kanamyceticusN/A
Find proteins for Q1EQE0 (Streptomyces kanamyceticus)
Go to UniProtKB:  Q1EQE0
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.71 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.185 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 203.410α = 90.00
b = 131.110β = 107.22
c = 77.480γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALAdata scaling
BALBESphasing
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-07-17
    Type: Initial release
  • Version 1.1: 2013-07-31
    Type: Database references
  • Version 1.2: 2015-08-05
    Type: Structure summary